thumb|"cempa" or "cempan" stood for 'warrior' in the ancient Anglo-Saxon texts. A champion (from the late Latin campio) is the victor in a challenge, contest or competition. There can be a territo
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854928175b98adbd0acd77ec7f515aa6eaaad474d17888685e41749aa34c78a3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88080147-6f94-4898-9c80-ccea32a8d403.json and https://artists.proofprofile.net/proofs/artist/88080147-6f94-4898-9c80-ccea32a8d403.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a922f88a1b4b32987c9f7811d36852602801fcaf6fd483f101cdae54064d47. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR10800477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74a53c33128135b9de2a71c09ad784d3ec49dd3957fad9eb09c5a16433ee503. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f756b451590e9c21a29219e32f8e004ea9e618c074c285c434543c070c7261b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11000375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3830a53ab08d973b833d0b0593a5f9ae95a5274ea81af629c883a75bce14ce44. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11000377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe859b3bfa4403c92e9a941109f52924b8bd5bef1bf206e277c43cfeb65312eea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11100718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958dc7f3b0e3475a6c64be753c411c50012701107dd9bb3f57f8dd8de24a3b94. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11100721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b9515392c104ea0315e52862d7477eb87a898d9846b345fcffde75caf3331. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11100722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467cd8b06be9c250d1abbda6be22ab4aeabbd2bc691c9fa17843f8d76bc78438. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a6f208556ad6ffc8e87c51291a38809a1468c4fad5ada10f046669f02c421d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fab05d87e5ccbc394fc48e69ba83de56cffb120018a210014c16dc528a8c676. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd956ea19a806f020cceee87696b33c00db6b1336ce7a0bcdc9cb7ca324235. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ab95f53462ed59b864ff4d88e239bd1d6a42be10a787baac28e325f98aaa0. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd924d520fdda1de0b3a6b0d7dd7648f744fe4699393555a93b1aaac768cd9063. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425f249a96b8f19e39a6b6f9d8b7560e1f109ed687bd6481ddb6b435e42c81b5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11300576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502e78e45c43378e350388eb957e2640c05abc16cc47e084dd2cf072408f470. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11500633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716dfc34c2f8115411781b221a98cc80d54ef43429764e85ca57e08c63567c5. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fa1554a3bd5f7b42a981fd86f8ee284b254881efecd0b268930f1a57595143. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11500638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb957b3ece9c739562b588a8c3a113cae546f6aa1d10832972d9b4bf14d319f0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bae16bc1e8518fe948f2f5cf7d32d1bc2ad5419cc11aebbbf23a2fda3df5f9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11700250.
Coleção Dose Dupla - Som Sette & Champion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b7155e11632857ebf158cc20c4bed0bdb2ff2983970ce27f0d5435a650ceb1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR11700241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46be03cc6bab21d46de9dbbcab60e3847f523c1780737156db7f7af819ea0ca6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR10900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5552c4c35f30bb17f512d4ff7d02be0f738cc4a5829e13b36df0277e6a543a4. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2249359.
Champion - 30 Anos Ao Vivo / Pot-Pourri - Vai e Volta / Sonho de uma Noite de Verão / Ela é Doida / O Pai Tá Louco / Donna
Champion - 30 Anos Ao Vivo / Só Você/Vivo Por Ela/Linda Linda/Dá Pra Mim/Benzinho/Adriane/Onde Anda Minha Namorada/Ciumento
Onde Anda Minha Namorada (30 Anos Ao Vivo)
Não Quero Mais Saber de Compromisso - 30 Anos (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3f3eb0971567b998a989434a88b8290fccbb6a395e7525eb8c30d5a79fb2fe. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKINW2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38879b7aed651a9a2fd58e925f380e8d9f462aa3a297ba1953b66455bb4af1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR10800472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38879b7aed651a9a2fd58e925f380e8d9f462aa3a297ba1953b66455bb4af1. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR10800472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a922f88a1b4b32987c9f7811d36852602801fcaf6fd483f101cdae54064d47. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR10800477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27858034da08b16063d2e7af176d384174211183cdf918759ecc746fd7b87edc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71560312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b64e83519b2c59526a5f49ed670b1d68b141e077fe13ae4c5d3a14de605721. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVR10800476.